Reinforcement for concrete floors, floor-beams, girders, and the like.



W. C. EDWARDS, Jn.

RBIIFOBOEMENT FOR CONCRETE FLOORS, FLOOR BEAMS, GIRDERS, AND THE LIKE.

APPLIGATIQN FILED-M1111, 19.12.

Patented Nov. 19, -1912.

2 SHEETS-SHEET 1.

w. C. Amas, JB. RBINI'OBGEMENT FOR GONCRETE FL 0 FLOOR BEANS, GIBDBBS, AND THE LIKE.

' PPPPPPPPPP N PR.11.1912. 1,645,006. Patented Nov. 19, 1912.

2 SHEETS-S EET 2.

' Zgz L@ l M S L@ H N F//f/JQ @XXXV-x l wf y, UNITED STATES #Hammers 'Passw-fiese F'LObRl'S 50e-essere mme @Nb .was Lm.

.ay-111,045,006. f Srscvictin of. Letteryslatent Patented Nov. 19,1912.

`= .f I; f-

.t Y Application tiled April 11, 1912. Serial No. 690,010. i

"To all whomt concem.- Y 18 extendingtransversely at-20, through the Be it known that I, WILLIAM C. EDWARDS, bar 1 5, and connecting with the slit 19, leav Jr, a, citizen" of the United States of 'ing small portions' of the webs 16 and 17 6o "America,residingv at Kansas City, .in the uncut, as seen at 16", 17", thereby forming a.

- 5 'colmty of 'Jackson and State of Missouri, longitudinal section 15", of the intermediate have. invented certain `new and useful Imbarl. The slitting or cut-ting is then oonprovements in Reinforcements for Concrete tinued at' intervals,in the plate and in the 'Floors,F loor'-Beams, Girders, and the Like; webs, in like manner as irst described, in vt-he 65 vand Idohereby' declare that 4,the following direction ef `the central portion of the lois a full, clear,k and exactdescription' of the barred plate, thereby forming a linnnber -ofinvention, such'asjwill enable others tomake the short members 15", of th'eintermediate `anflusethe same, 'reference being. had to the bar 15. l The said central portionI of' the `accompanying drawings, forinlng a part of plate constituting one-third, or more of the 7o this specification. Q lrolled shape or plate isleft unslitted. The

The v:invention consistsin the novel con#` .slitting vis then resumed in the4 remaining `struction and' combination of parts hereinportion of the plate'constituting theo'ther after fully described and specifically pointed` end of the' plate, in thesame manner as out in the'claims. .I s heretofore described, forminga series o'i like 75 In the drawings: Figure'l is a longitu-` portions 15", cit the intermediatev bar 15. .It

.dinal, vertical, sectional view `ofthe concrete will be, therefore, seen that the portions 1,5",

j floor andreinforced concrete'beams supportof the said bar 15 are rigidly connected by ing said` ioor, 7embodyin the invention.'` meansl of the portions 16", 17", of the respec# Fig. 2. .i is 'a plan view o the slitte'd rollj tive webs 16 and 17 with the outer` bars `12 80 blank,` from' which the .reinforcement pis and 14. j fabricated". Fig. 3. is a transverse section,` Upon the completion ofthe slitting of'the taken on thelines ai, m, on Fig. 2. 4./.is barred plate, the outer portions ofthe a view,'i'n perspective, of thecomplete reinbarred plate are vtwisted or given aquarter forcement. Fig 5. is a 1an `View of the turn at the points at which the slittedk r- 85 rolled blank Ifor the reintorcement', in multions of the webs meet the Acentral non-shtted tiple, showing the slitted parts. Fig. t?. Ais portions of the` barred plate. The.. outer ya plan view of the reinforcement in inult1ple. portions aremnow expanded, the .connecting F1g.7. is a modification of the rolled blank portions assuming a, diagonal posit-ion atan or plate, shownin Figs. 2 and 3. angle of 45, to the longitudinal plane of 90 Similar numerals afk reference' indicate the central'portion of fthe reinforcement. In

' corresponding parts in all the igures of the the completlon jofjthe expanding offthe bars drawings.y y 12 and 14, the .ends ofthe bars 12 and 14 In, the, details of construction of .my reinat the respective ends of thereinforcement fox-cement, as seen in the drawings, towhich are in alternate' vertical positions, the outer 95 reference 'is now made, a longitudinal metal-- bar '12, at one of vthe reinforcements occu- 40 lic .plate r .b lank,n such. as open hearthk pying va position in the same yhorizontal I steel of the requisite'width. lor -as shown inl plane as that of the central portion of the VFig.2',(an'bodying'the widthof a single dereinforcement, while 4the `end4 of the outer vice', is rolled `,lengthwise lin the shape `or bar 14 entends4 upwardly and 'outwardly 100 form as seen in cross-section in Fig. 3, there from' said central 'portion ,of the reinforceby producing the longitudinal outer bars 1,2 ments integrally above andina vertical poand 14, which yare .substantially rectangular' sit-ion tothatofftheend' barill.; 'While' at` incrosssection,'and a'nintermediate bar 'the outer endof the reinforcementthe poofslightlyA less area incross-section, which sitlons of the said'bars are reversed, thebar 105 latter bar is integrally' .connected `with the' 1.4 forms the lowerghorizontal member. of

outer bars 12 and1L 1,"by'the'web portions 1 6 the saiduend of they reinforcement. 4

and 17, which are ofreduced thicknessto For floor.construction,` the 'reinforcement that of the said'barsf.'- Port-ions of the webs' as seen inFig. 4 is preferably made in mulf 16 and 17 are now cut or slitted along 'the tiple and fabricated from barredplatesof 1110 lines ofthe inner surfaces of the bars 12 and increased width to that from which Fig. 2

14, at intervals beginning at one end of the isI constructed.: In the latter construction rolled bar or plate, producing the longitudi the bars 12 andl ar/e connectedto similar -nal slits 1:8 and 19, as seen in Fig. 2, the slit .m m v bars, by means of the webs 25, as seen in the l slitted'multiple rolled webs extending along portion` of the rolled plate, The slitting of pan'ded, while the same of the .bars are performed. as described of bars' 12T and A14, Fig. 1, andoct'zupycorre-v 1will bassen, iin the central v-vice'care for such plate, in Fig'. u 5, thesethe line -of the 4central the webs from which the membersvlx are formed is continued the entire length of the rolled plate, The Acentral portion 27, of the multiple reinforcing device, .are -each -ex twisting of the ends sponding positions inthe reinforcement. 'qjIt therefore, that the portions portion 27, ofc-themuitipieie-f transverse stresses as mayl be set up in-.slabconstructiom and obviate.

-the necessityof the 'placing 4of 'loose rods inay'be'slitted -bers similar to the' members 15"' inthe transversely" thcfJ main reinforcement. Likewise, ifdesii'ed, `the web .portions '.25 and expandedto form mcmtral portionof the multiple device l l tion', and

Fig.' 3, maybe further m Flg.-7,'

late 18S- Sell in ifiedasse'enin'A in which the o1 1ter rolled bar's-4 40' and; 41, Vare approximately-,circularjin construe the web 12 essentially de ressed.` In the latterjconstructiomja-V-shape ,rib 43' isform'e'd, on the.' lowersurfacc of the `web 42. l

'The advantages of ',myl invention, V when .acting as a1 reinforcement to vconcrete struc- Th'eform of the 'rolled turcs,- are-l such that when `the structure 'is loaded to destruction, thev entre..tension re- 1 inforcement will act's'fa single-unit, thereby 4increasing to va--marked ,degree .the eiciency of the reinforcement. 'r

As be; Iclearly seen .Ire-ference to Fig;I the several alliedl-partsfconstitutng the central pgtionof-the' reinforcement are approximately eqidistant from. the top of the concrete-structure -w'ithin which itis emj bedded, part will thereforel tion com dinally 'and transversely at bear'v 't'sproport'onate share of the. tensin .stresses set up inthe'structure f It is obvious thata'thegforin of the reinforcement` shown may be .adapted t'o such" uses as va 'circumstances require, l and? such modifications employed as are within transverse slits extending through )the intermediate bar to form sectional mber's, of said intermediatebar, :which: re inteected with .the outer b of said webs bein slitted, progressively,

said intermediate bar,

all co gerinfrcegdient; the ends of said uter comnotamos bined bars being twisted in reverse 'directions through a bers, which ottom members lie substantially in the samevertical and horizontal plane as the ,intermediate bar in the central portion 70 ofthereinforcement, the top member and the ,integrally connected sectional members beingsaisedand expanded from the bottom inem l 2:, -A .reinforcement for :concrete construe 7 5 tion c om'pos' d jof. triple parallel bars, and. webs intermediat'efand integrally connected with said bars,rth`e said bars .and webs 'lying substantiallyv 1in the same horizontal plane,

whichwebsfatthe outer ends 'of therein- 80 .forcement areslitted, pr .terv'alsinilongitudinal an lsaid transvcrsefslits form lsectional members, diate bar, .which are inte- '85` essively, atin-` transverseslits, extending through- :the mtermedia'te'jbar to grally connectedwith .the outer bars; the ends of whichreinforcement are twisted in reverse directions a quarter turn, adj acentthe -centralportion thereof, thereby formingtcp and bottom Vreinforcing mmbers lyingv in a 9.0 vertical plane at right angles to the plane of the centralportionof the reinforcement, the top and integrally connected-sectional members being raised in said vertical plane and expanded from the'bottom member,.where 95 by the sectional parts` in theouter portions of the reinforcement are brought into oppo- 'sitely-and outwardly inclined positions to the central; portion1 of the reinforcement.

3. A reinforcement Afor concrete structures composed of a series of integrally connected reinforcing devices, each device consisting of triplepara'llel side and intermediatebars, llyconnected by intermediate web portions, said bars and webs lying stantial-ly the same horizontal plane, the said longitudinally an transversely at terval s, said transverse slits extending through the inter mediate bar `tof'form sectional the said side members being expanded and integrally connected with each other by the said sectional mem-` bers; the ends of which device/being twisted Vin reverse directions in a quarterturn adja- 115 cent. the central portion thereof, the said side bars and intermediate sectional portions thereby forminop, diagonal and b ot-v tom reinforcing mem rs of the saiddevice, the diagonal :members upwardly inclined to the central portion of the reinforcement.

WILLIAM C. EDWARDS, Jn. Witnesses: A

Renner O. McLEN, ANNIE L. Gum.

quarter turn adjacent the lcentral 65 4portion thereof, the outer bars at said'ends forming to and bottom reinforcing-memmembers of being. outwardly and 

